Goodwill and Intangible Assets

12 Months Ended

Oct. 31, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Acquired Intangible Assets

Goodwill

The change in the carrying amount of goodwill for the years ended October 31, 2020 and 2019 was as follows (in thousands):

	Year Ended October 31,
	2020		2019
Beginning balance as of November 1, 2020 and 2019	$	145,563	$	219,627
Goodwill impairment charge	—		(74,600)
Foreign currency translation adjustment	591		536
Balance as of October 31, 2020	$	146,154	$	145,563

At our annual testing date, August 31, 2020, we had five reporting units with goodwill balances. Two of these units were included in our NA Fenestration segment and had goodwill balances of $35.9 million and $2.8 million, two units were included in our EU Fenestration segment with goodwill balances of $50.9 million and $17.4 million, and our NA Cabinet Components segment had one unit with a goodwill balance of $39.1 million. During the year ended October 31, 2019, we recorded impairment charges of $74.6 million associated with our NA Cabinet Components segment. The details of the impairment charges, as well as the results of our goodwill assessments during the year ended October 31, 2020 are more fully described at Note 1, "Nature of Operations, Basis of Presentation and Significant Accounting Policies - Long-Lived Assets - Goodwill." For a summary of the change in the carrying amount of goodwill by segment, see Note 17, "Segment Information."

Identifiable Intangible Assets

Amortizable intangible assets consisted of the following as of October 31, 2020 and 2019 (in thousands):

	October 31, 2020	October 31, 2020				October 31, 2019
	Remaining Weighted Average Useful Life	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Customer relationships	9 years	$	154,004	$	80,441	$	153,950	$	70,103
Trademarks and trade names	9 years	55,745		37,314		55,745		35,210
Patents and other technology	3 years	22,386		21,312		22,386		19,471
Total		$	232,135	$	139,067	$	232,081	$	124,784

We do not estimate a residual value associated with these intangible assets. See additional disclosure at Note 1, "Nature of Operations, Basis of Presentation and Significant Accounting Policies - Restructuring."

During the year ended October 31, 2019, we retired fully amortized identifiable intangible assets of $0.3 million related to customer relationships and patents and other technology. We retired $0.3 million of fully amortized identifiable assets related to customer relationships during the year ended October 31, 2020.

The aggregate amortization expense associated with identifiable intangible assets for the years ended October 31, 2020, 2019, and 2018 was $14.3 million, $15.3 million and $16.2 million, respectively.

Estimated remaining amortization expense, assuming current intangible balances and no new acquisitions, for future fiscal years ending October 31, is as follows (in thousands):

	Estimated Amortization Expense
2021	$	12,573
2022	11,941
2023	11,194
2024	10,464
2025	9,239
Thereafter	37,657
Total	$	93,068

We did not incur impairment losses related to our identifiable intangible assets during the years ended October 31, 2020, 2019, and 2018.